isSupported (W3C DOM Core method)
| Version | Depr. | Static |
|---|---|---|
| DOM2 | No | No |
| IE7 | FF1.5+ | SA1.3+ | OP9+ |
|---|---|---|---|
| None | Full | Full | Full |
- Returns
Boolean
Example
var supported = node.isSupported('Events', '2.0')In
the example above, the variable supported will have the
value true if the implementation includes the DOM 2
Events module and it's supported by this node. Otherwise
supported will have the value false.
Arguments
- feature (
DOMString) required The name of the feature to test, using one of the values defined in the DOM 2 Conformance list.
- version (
DOMString) The DOM version to test. For DOM 2 this is always the value
2.0. If this argument is not specified, the method will returntrueif the feature is supported at any DOM level.
Description
Test whether a specific feature of the DOM is implemented, and supported by this node.
This
method is essentially the same as hasFeature, except that it's concerned
with whether a feature is supported by a specific node, rather than
whether it's implemented in general.
Here's a list of the features and DOM versions that can be tested:
| Feature name | Version | Description |
|---|---|---|
XML |
1.0 |
DOM 1 Core and XML |
HTML |
1.0 |
DOM 1 Core and HTML |
Core |
2.0 |
DOM 2 Core |
XML |
2.0 |
DOM 2 XML |
HTML |
2.0 |
DOM 2 HTML |
Views |
2.0 |
DOM 2 Views module |
StyleSheets |
2.0 |
DOM 2 Style Sheets module |
CSS |
2.0 |
DOM 2 CSS module |
CSS2 |
2.0 |
DOM 2 CSS 2 module |
Events |
2.0 |
DOM 2 Events module |
UIEvents |
2.0 |
DOM 2 User-interface Events module |
MutationEvents |
2.0 |
DOM 2 Mutation Events module |
HTMLEvents |
2.0 |
DOM 2 HTML Events module |
Range |
2.0 |
DOM 2 Range module |
Traversal |
2.0 |
DOM 2 Traversal module |
As with hasFeature, the
practical usefulness of this method is negligible (see hasFeature for details).
Return value
Returns
true if the feature is implemented and supported on
this node, otherwise false
Compatibility
| Internet Explorer | Firefox | Safari | Opera | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 5.5 | 6.0 | 7.0 | 1.5 | 2.0 | 3.0 | 1.3 | 2.0 | 3.0 | 9.0 | 9.5 |
| None | None | None | Full | Full | Full | Full | Full | Full | Full | Full |
Internet Explorer doesn't implement this method, and will throw an error if it's used.
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